Motorola MVME2400 manual General Description, Block Diagram, MPC750 Processor

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Functional Description

General Description

The MVME240x is a VME processor module equipped with a PowerPC 604 RISC (MPC750) microprocessor.

As shown in the Features section, the MVME240x offers many standard features desirable in a computer system—including Ethernet and debug ports, Boot ROM, Flash memory, SDRAM, and interface for two PCI Mezzanine Cards (PMCs), contained in a one-slot VME package. Its flexible mezzanine architecture allows relatively easy upgrades of the I/O.

There are four standard buses on the MVME240x:
PowerPC Processor Bus	ISA Bus
PCI Local Bus	VMEbus

As shown in Figure 3-1, the PCI Bridge portion of the Hawk ASIC provides the interface from the Processor Bus to the PCI. A W83C553 PCI/ISA Bridge (PIB) Controller device performs the bridge function between PCI and ISA. The Universe ASIC device provides the interface between the PCI Local Bus and the VMEbus. Part of the Hawk ASIC is the ECC memory controller.

The Peripheral Component Interface (PCI ) local bus is a key feature. In addition to the on-board local bus peripherals, the PCI bus supports an industry-standard mezzanine interface, IEEE P1386.1 PMC (PCI Mezzanine Card).

Block Diagram

Figure 3-1 is a block diagram of the MVME2400’s overall architecture.

MPC750 Processor

The MVME240x can be ordered with a PowerPC 750 processor chip with 32MB to 128MB of ECC SDRAM, and up to 9MB of Flash memory.

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